Rivers in Oregon
Imnaha River at Imnaha
Below flood stage
1.62ftStage
Observed Mon, Sep 21, 3:00 PM PDT
- Flood stage
- 5.50 ft
- Forecast crest
- 1.62 ftMon, Sep 21, 5:00 PM PDT
- Record crest
- 11.44 ft1997
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 9.00 ft |
| Moderate flood | 7.00 ft |
| Minor flood | 5.50 ft |
| Action | 5.00 ft |
- 5.50 ftAt 5.5 feet low land areas along the river see minor flooding
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | Under 5% |
| Moderate flooding | Under 5% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 21, 2026.
Crest history
20 crests on NOAA’s list since 1938.
| # | Date | Stage |
|---|---|---|
| 1 | January 1, 1997 | 11.44 ft |
| 2 | January 17, 1974 | 7.86 ft |
| 3 | April 27, 1978 | 7.61 ft |
| 4 | May 28, 1948 | 7.06 ft |
| 5 | May 26, 1998 | 7.06 ft |
| 6 | May 16, 2011 | 6.80 ft |
| 7 | May 19, 1957 | 6.80 ft |
| 8 | May 23, 1942 | 6.70 ft |
| 9 | May 15, 1975 | 6.37 ft |
| 10 | May 7, 1995 | 6.29 ft |
| 11 | May 1, 1938 | 6.27 ft |
| 12 | May 4, 1971 | 6.25 ft |
| 13 | May 23, 1967 | 6.08 ft |
| 14 | June 5, 2010 | 6.07 ft |
| 15 | May 27, 1956 | 6.05 ft |
| 16 | December 12, 1995 | 5.95 ft |
| 17 | April 27, 2012 | 5.94 ft |
| 18 | April 20, 1997 | 5.92 ft |
| 19 | May 23, 1998 | 5.90 ft |
| 20 | April 9, 2019 | 5.63 ft |
Most recent crests
- April 9, 2019: 5.63 ft
- April 27, 2012: 5.94 ft
- May 16, 2011: 6.80 ft
- June 5, 2010: 6.07 ft
- May 26, 1998: 7.06 ft
- May 23, 1998: 5.90 ft
- April 20, 1997: 5.92 ft
- January 1, 1997: 11.44 ft
- December 12, 1995: 5.95 ft
- May 7, 1995: 6.29 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the Northwest River Forecast Center. Forecasts are issued routinely year-round.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.